Construction of transmission patterns for D2D communication
Embodiments of the present disclosure describe apparatuses and methods for selecting or extending time resource patterns relating to device-to-device (D2D) functionality. Various embodiments may include processing circuitry to select a subset of a predefined set of D2D time resource pattern bitmaps and generate a signal having information corresponding to the selected subset of D2D time resource pattern bitmaps. Other embodiments may be described and/or claimed.
1. At least one non-transitory computer-readable medium comprising instructions stored thereon that, in response to execution of the instructions by one or more processors, cause a wireless communications device to:
select a subset of a predefined set of device-to-device (D2D) time resource pattern bitmaps, wherein individual D2D time resource pattern bitmaps are to indicate subframes of a communication frame that allow D2D communications, wherein a one in the bitmap corresponds to a subframe allowed for transmission by a transmitting user equipment (UE) and a zero in the bitmap corresponds to a subframe that cannot be used for transmission by the transmitting UE;
generate a parameter having information corresponding to the selected subset of D2D time resource pattern bitmaps to be signaled using radio resource control (RRC); and
cause an RRC signal based at least in part on the parameter to be transmitted to a UE.
2. The at least one non-transitory computer-readable medium of claim 1 , wherein the RRC signal includes a parameter that represents a set of permissible ones values, wherein each permissible ones value represents a count of one bits that may be present in a D2D time resource pattern bitmap selected from the predefined set of D2D time resource pattern bitmaps.
3. The at least one non-transitory computer-readable medium of claim 1 , wherein the selected subset of D2D time resource pattern bitmaps is for mode-2 operation.
4. The at least one non-transitory computer-readable medium of claim 1 , wherein the predefined set of D2D time resource pattern bitmaps have a number of bits N, wherein N is an integer between 6 and 8, inclusive.
5. The at least one non-transitory computer-readable medium of claim 1 , wherein the predefined set of D2D time resource pattern bitmaps have a number of ones k, wherein k includes k values in a set {1, 2, 4}.
6. An evolved node B (eNB) comprising:
processing circuitry to:
select a subset of a predefined set of device-to-device (D2D) time resource pattern bitmaps, wherein individual D2D time resource pattern bitmaps are to indicate subframes of a communication frame that allow D2D communications, wherein a one in the bitmap corresponds to a subframe allowed for transmission by a transmitting user equipment (UE) and a zero in the bitmap corresponds to a subframe that cannot be used for transmission by the transmitting UE; and
generate a parameter having information corresponding to the selected subset of D2D time resource pattern bitmaps to be signaled using radio resource control (RRC); and
transceiver circuitry, coupled with the processing circuitry, to send an RRC signal based at least in part on the parameter to a UE.
7. The eNB of claim 6 , wherein the RRC signal includes a parameter that represents a set of permissible ones values, wherein each permissible ones value represents a count of one bits that may be present in a D2D time resource bitmap selected from the predefined set of D2D time resource pattern bitmaps.
8. The eNB of claim 6 , wherein the selected subset of D2D time resource pattern bitmaps is for mode-2 operation.
9. The eNB of claim 6 , wherein the predefined set of D2D time resource pattern bitmaps have a number of bits N, wherein N is an integer between 6 and 8, inclusive.
10. The eNB of claim 6 , wherein the predefined set of D2D time resource pattern bitmaps have a number of ones k, wherein k includes k values in a set {1, 2, 4}.
11. A user equipment (UE) comprising:
transceiver circuitry to receive a radio resource control (RRC) signal having information corresponding to a selected subset of a predefined set of device-to-device (D2D) time resource pattern bitmaps, wherein individual D2D time resource pattern bitmaps are to indicate subframes of a communication frame that allow D2D communications, wherein a one in the bitmap corresponds to a subframe allowed for transmission by a transmitting UE and a zero in the bitmap corresponds to a subframe that cannot be used for transmission by the transmitting UE; and
processing circuitry, coupled with the transceiver circuitry, to:
select a D2D time resource pattern bitmap from the selected subset based at least in part on the received RRC signal; and
direct the transceiver circuitry to communicate with another UE using the selected D2D time resource pattern bitmap.
12. The UE of claim 11 , wherein the RRC signal includes a parameter that represents a set of permissible ones values, wherein each permissible ones value represents a count of one bits that may be present in a D2D time resource bitmap selected from the predefined set of D2D time resource pattern bitmaps.
13. The UE of claim 11 , wherein the selected subset of D2D time resource pattern bitmaps is for mode-2 operation.
14. The UE of claim 11 , wherein the predefined set of D2D time resource pattern bitmaps have a number of bits N, wherein N is an integer between 6 and 8, inclusive.
15. The UE of claim 11 , wherein the predefined set of D2D time resource pattern bitmaps have a number of ones k, wherein k includes k values in a set {1, 2, 4}.
16. The UE of claim 11 , wherein the transceiver circuitry is to use unlicensed long term evolution (LTE) spectrum when engaging in D2D communication with the other UE.
17. The UE of claim 11 , wherein the transceiver circuitry is to use Bluetooth or Wi-Fi when engaging in D2D communication with the other UE.
18. The UE of claim 11 , wherein the transceiver circuitry is to receive the RRC signal from an evolved Node B (eNB).
19. The UE of claim 11 , wherein the processing circuitry is to select the D2D time resource pattern bitmap from the selected subset using random or pseudo-random selection.
20. An apparatus comprising:
means for selecting a subset of a predefined set of device-to-device (D2D) time resource pattern bitmaps, wherein individual D2D time resource pattern bitmaps are to indicate subframes of a communication frame that allow D2D communications, wherein a one in the bitmap corresponds to a subframe allowed for transmission by a transmitting user equipment (UE) and a zero in the bitmap corresponds to a subframe that cannot be used for transmission by the transmitting UE;
means for generating a radio resource control (RRC) message having information corresponding to the selected subset of D2D time resource pattern bitmaps; and
means for transmitting the RRC message to a User Equipment UE.
21. The apparatus of claim 20 , wherein the RRC message includes a parameter that represents a set of permissible ones values, wherein each permissible ones value represents a count of one bits that may be present in a D2D time resource pattern bitmap selected from the predefined set of D2D time resource pattern bitmaps.
22. The apparatus of claim 20 , wherein the means for selecting the subset of a predefined set of D2D time resource pattern bitmaps, the means for generating the RRC message, and the means for transmitting the RRC message are included in an evolved node B (eNB) or a portion thereof.